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Math Help - use suitable substitution to integrate

  1. #1
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    use suitable substitution to integrate

    would be much grateful for help with the following 2 problems.

    use suitable substitution to integrate

    (a)  f(x) = x^2 (x^2 - 10)^{20}



    (b) f(t) = t^2 e^{3t^3+5}
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  2. #2
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    Quote Originally Posted by decoy808 View Post


    (b) f(t) = t^2 e^{3t^3+5}
    u = 3t^3+5
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  3. #3
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    Quote Originally Posted by decoy808 View Post
    (a)  f(x) = x^2 (x^2 - 10)^{20}
    Try this : u=x^2-10
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